(mathematics) The interchange of suitable rows and/or columns of a matrix in order to place a particular element on the diagonal (prior to some other operation)

(physics) Synonym of Hamiltonian

retrospective in effect.

plural of Sobel operator

A discrete differentiation operator that computes an approximation of the gradient of the image intensity function, used in image processing and computer vision, particular for detecting edges.

(mathematical analysis) Any of a particular class of second-order linear differential operators.

plural of elliptic operator

plural of co-operator

Alternative spelling of cooperator

Synonym of Hartmann's procedure